1. IOR/R/20/A/3805 Reference (shelfmark): IOR/R/20/A/3805 Title: File 1383 Proposed visit of a representative of the Petroleum Concessions Ltd. to San'a for the purpose of securing some sort of oil prospecting rights in the Yemen Collection Area: India Office Records and Private Papers Languages: English Date Range: 1936 Extent: 1 file